Incorrect Used memory metric

[vladislav_samoy]

Hi all

Can anybody explain why Dynatrace shows different Used memory memory than OS does?

Thanks in advance

Dynatrace screen

OS top and free -h screens

[franz_soengen · Accepted solution]

Hi Vladyslav,

this recent blog post may clear things up: https://www.dynatrace.com/news/blog/improved-host-...

Under linux:

 used = total – free – buff/cache
While Dynatrace calculates used memory as:
used = MemTotal - MemAvailable
In your case: 3.7GB - 2.1GB = 1.6GB (the value that's displayed in Dynatrace)
best regards
Franz

[vladislav_samoy]

Thanks Franz